Not if you are paying for it. Otherwise anty big success would be presented with a large limit overage charge or the host chokes the site to the point it is useless. Unlimited is hardly ever what you think... or the host goes broke.

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Follow me on Twitter! On the Trail with SOSG How I became a Social Media Convert and Twitter and Agents of Influence and now regular poster at Cloudmixer where We're Mixing New Media Ideas.