Purchase Rights to Use Alfafa Image as Avatar

[californianerd]

I found this image somewhere on the internet. I do not remember where. I would like to be able to legally use it as an avatar in forums and user groups. Where can I purchase the rights to do so?

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[imnotallenhoskins]

[littlerascal4891]

You'd probably be fine just to use it without going through all that trouble. I don't think very many people purchase the rights to use a picture as an avatar.