I dont mean any offense, But I wouldnt feel comfortable as a player clicking this, and then using the link... plus it makes it look like you only map for money...
just saying, Though I do like having the option of donating, I think it would be MUCH better, if it was a dialog with the link thats created when the player types /donate
and have it in the loading screen say, Tip: Type /Donate for a donate link.
And even my way I wouldnt feel confortable having this link. PLUS, though Im 99% sure I am wrong, this could be seen as advertising for paypal if you display their logo, but the only map that has been taken down for that was Squad TD and that was because it was a Rival games logo i believe. So i wouldnt worrie about that, but I would keep that tiny detail in mind. But personally I doubt theirs any risk, just dont add the actual logo and that 1% goes to 0%