Yup its wordpress ..
http://hatkeoffer.com/ Its a site which i planned to start sharing cheap offers with a forum, but i havent worked on it much so would be willing...
nops no old content..yeah i know its almost equal to getting a new domain and developing it.. so selling it for a very less amount
very little...
http://www.mobineedz.com i recently got hold of this domain, this was an old high traffic forum but was shut down in 2011 or 2012, not sure...
how many post
http://www.taxsaving.org/ Its got few hits, and its indexed in search engines. The site is based on tax saving tricks as the name suggest
you could use HTTP_REFERER and stop people from directly accessing the login page but this could be a problem too in soem cases
yeah most likely your shared host server is compromised
Separate names with a comma.