EDIT; It seems that people are trying to connect with a normal minecraft client. Download the technic launcher, select tekkit from the mod list (Top Left), login, and go from there. Seriously, you'll get nowhere otherwise.

Welcome! We are going to be making a giant world in a flatgrass map, and we need you. Connect to our server via tekkit, and if you want, you can help us build probable one of the biggest builds in minecraft. Server will be up from around 4:30 to 8:00 (GMT+0) and you can join in on those times.

Planet Minecraft, for some reason, dumped this to the description;
.adslot-overlay {position: absolute; font-family: arial, sans-serif; background-color: rgba(0,0,0,0.65); border: 2px solid rgba(0,0,0,0.65); color: white !important; margin: 0; z-index: 2147483647; text-decoration: none; box-sizing: border-box; text-align: left;}.adslot-overlay-iframed {top: 0; left: 0; right: 0; bottom: 0;}.slotname {position: absolute; top: 0; left: 0; right: 0; font-size: 13px; font-weight: bold; padding: 3px 0 3px 6px; vertical-align: middle; background-color: rgba(0,0,0,0.45); text-overflow: ellipsis; white-space: nowrap; overflow: hidden;}.slotname span {text-align: left; text-decoration: none; text-transform: capitalize;}.revenue {position: absolute; bottom: 0; left: 0; right: 0; font-size: 11px; padding: 3px 0 3px 6px; vertial-align: middle; text-align: left; background-color: rgba(0,0,0,0.45); font-weight: bold; text-overflow: ellipsis; overflow: hidden; white-space: nowrap;}.revenue .name {color: #ccc;}.revenue .horizontal .metric {display: inline-block; padding-right: 1.5em;}.revenue .horizontal .name {padding-right: 0.5em;}.revenue .vertical .metric {display: block; line-height: 1.5em; margin-bottom: 0.5em;}.revenue .vertical .name, .revenue .vertical .value {display: block;}.revenue .square .metric, .revenue .button .metric {display: table-row;}.revenue .square .metric {line-height: 1.5em;}.revenue .square .name, .revenue .square .value, .revenue .button .value {display: table-cell;}.revenue .square .name {padding-right: 1.5em;}.revenue .button .name {display: block; margin-right: 0.5em; width: 1em; overflow: hidden; text-overflow: clip;}.revenue .button .name:first-letter {margin-right: 1.5em;}a.adslot-overlay:hover {border: 2px solid rgba(58,106,173,0.9);}a.adslot-overlay:hover .slotname {border-bottom: 1px solid rgba(81,132,210,0.9); background-color: rgba(58,106,173,0.9);}a.adslot-overlay:hover .revenue {border-top: 1px solid rgba(81,132,210,0.9); background-color: rgba(58,106,173,0.9);}div.adslot-overlay:hover {cursor: not-allowed; border: 2px solid rgba(64,64,64,0.9);}div.adslot-overlay:hover .slotname {border-bottom: 1px solid rgba(128,128,128,0.9); background-color: rgba(64,64,64,0.9);}div.adslot-overlay:hover .revenue {border-top: 1px solid rgba(128,128,128,0.9); background-color: rgba(64,64,64,0.9);}
.adslot-overlay {position: absolute; font-family: arial, sans-serif; background-color: rgba(0,0,0,0.65); border: 2px solid rgba(0,0,0,0.65); color: white !important; margin: 0; z-index: 2147483647; text-decoration: none; box-sizing: border-box; text-align: left;}.adslot-overlay-iframed {top: 0; left: 0; right: 0; bottom: 0;}.slotname {position: absolute; top: 0; left: 0; right: 0; font-size: 13px; font-weight: bold; padding: 3px 0 3px 6px; vertical-align: middle; background-color: rgba(0,0,0,0.45); text-overflow: ellipsis; white-space: nowrap; overflow: hidden;}.slotname span {text-align: left; text-decoration: none; text-transform: capitalize;}.revenue {position: absolute; bottom: 0; left: 0; right: 0; font-size: 11px; padding: 3px 0 3px 6px; vertial-align: middle; text-align: left; background-color: rgba(0,0,0,0.45); font-weight: bold; text-overflow: ellipsis; overflow: hidden; white-space: nowrap;}.revenue .name {color: #ccc;}.revenue .horizontal .metric {display: inline-block; padding-right: 1.5em;}.revenue .horizontal .name {padding-right: 0.5em;}.revenue .vertical .metric {display: block; line-height: 1.5em; margin-bottom: 0.5em;}.revenue .vertical .name, .revenue .vertical .value {display: block;}.revenue .square .metric, .revenue .button .metric {display: table-row;}.revenue .square .metric {line-height: 1.5em;}.revenue .square .name, .revenue .square .value, .revenue .button .value {display: table-cell;}.revenue .square .name {padding-right: 1.5em;}.revenue .button .name {display: block; margin-right: 0.5em; width: 1em; overflow: hidden; text-overflow: clip;}.revenue .button .name:first-letter {margin-right: 1.5em;}a.adslot-overlay:hover {border: 2px solid rgba(58,106,173,0.9);}a.adslot-overlay:hover .slotname {border-bottom: 1px solid rgba(81,132,210,0.9); background-color: rgba(58,106,173,0.9);}a.adslot-overlay:hover .revenue {border-top: 1px solid rgba(81,132,210,0.9); background-color: rgba(58,106,173,0.9);}div.adslot-overlay:hover {cursor: not-allowed; border: 2px solid rgba(64,64,64,0.9);}div.adslot-overlay:hover .slotname {border-bottom: 1px solid rgba(128,128,128,0.9); background-color: rgba(64,64,64,0.9);}div.adslot-overlay:hover .revenue {border-top: 1px solid rgba(128,128,128,0.9); background-color: rgba(64,64,64,0.9);}

Additional Notes

We are making a giant country. and you can help.