HEATKEYS

BestReviewDomain - best review and free analytic for webmasters that gathers detailed information on your domain : traffic details, Technology language, whois, ranking info, domain backlinks,domain IP, DNS record, optimization, network tools, seo too...

W3Techs provides information about the usage of various types of technologies on the web.

StatsCrop - a web service that lets you explore any website informations and its history, understand your competitor

Showsites - A Free SEO tool that provides free website analysis, traffic details, rankings, contact email ,similar site, same owner site , same ip site, optimization and promotion reports.

Twitter is without a doubt the best way to share and discover what is happening right now.

Easily find more sites like those you like. Similar Sites helps you find related sites and alternatives based on community recommendations and computer analysis.

YouTube is a place to discover, watch, upload and share videos.

From AboutUs: See what information we have on Wiki and share your knowledge.

Diigo is a powerful research tool and a knowledge-sharing community

Netlog is a youth community where users can keep in touch with and extend their social network. On Netlog, you can create your own web page with a blog, upload pictures, watch videos, find events and play games.