can my server being blocked if i make too many http requests to a site?

[arianhojat]

I would like users on my site to place a random integer onto their homepage and my site will was going to pull their webpage into a php var and then regex if that int is there, if so then they probably have control of at least that webpage on that domain.

 

But I was worried after many http requests from my site, do you think a larger site like myspace etc. would block me?

 

I just want to confirm a user owns any public page that they claim they 'own', not doing anything bad.

 

and dare I ask, ways to get around this?

I was thinking somehow use a proxy (never used a proxy to get info, not sure if it would be done through php or server settings, plus wasnt sure which proxys are trustable) but wouldnt a large site like myspace block these too?

 

thanks,

Admins: you can move this question if its more appropriate somewhere else on phpfreaks.