Tips på bra koder för att dela å Facebook och Twitter?

De här blir jag inte av med...:(

Error Line 48, Column 65: The string following & was interpreted as a character reference. (& probably should have been escaped as &.)
…witter.com/share?url=http://www.catalinaimre.se&amp text=Simple Share Buttons"
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Error Line 49, Column 16: Bad value http://twitter.com/share?url=http://www.catalinaimre.se& text=Simple Share Buttons for attribute href on element a: Tab, new line or carriage return found.
target="_blank"><img src="http://www.simplesharebuttons.com/images/somacro/twit…
Syntax of IRI reference:
Any URL. For example: /hello, #canvas, or http://example.org/. Characters should be represented in NFC and spaces should be escaped as %20.
Error Line 50, Column 52: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
<a href="index.html"><img src="hem.jpg" id="link" /></a>