Bilingua - Bilingua: your language exchange app & learning companion.
Ping-O-Matic - Service to update different search engines that your blog has updated.
LingQ - Learn languages by immersing yourself in a world of interesting, authentic content!
TotalPing! - Promote your blog with TotalPing!
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
PingMyLinks - PingMyLinks is one of the oldest websites in the internet marketing industry that you can use to index your websites and blogs.