Create photo mosaics with Mosaickr – Lifehacker:

Turn Flickr photos into a cool-looking mosaic (a big photo composed of lots of tiny photos) with mosaickr.

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There’s no charge for the low-resolution version of your mosaic, but the high-res version will cost you 1.49 Euros (payable via PayPal).

Apart from seeming to be an interesting service, what is more interesting is that they are trying to monetise it with micro-payments per service. No doubt this is what web 2.5 will be about. Advertising can only go so far. Sooner or later people are going to have to pay something for their web services or lose them in a Web 1.0 style bang, as I’ve mentioned before.