My submitted pages to Google are behaving strangely - they tend to go "on" and "off" on their database. And even when they are "on", they have ridiculously low rankings. :confused:

This is already the second submitted site for which I have this kind of problem. And the 2 sites have nothing much in common.

Does it mean I have been penalised by Google for some reason, and that my IP address has somehow been blacklisted by them?

I don't believe I have spammed them, since I have submitted only two URLs - the Homepage and the Sitemap, all this while.

I'm thinking of using the search engine submission service provided by my web host, will it help? Will my IP address show up again?

Any advice is much appreciated.