How much linkjuice do plugins take?

I've now got around 20 plugins on one of my money sites and it occurred to me that they must be sapping a lot of linkjuice. W3 Total Cache for example, includes a link to their homepage in the coding of every single page! Multiply this by twenty and I wonder whether this is cause for concern??? Would appreciate some thoughts/advice etc.

Link in code have nothing to do with link juice.

the only thing you need to worry about linkjuice getting spilled over to other sites is in the footer of your WP theme.

And unless its coded (you can decode them) you can normally take out the link in the footer.

Look at it like this:

Plugins arent apart of your site, they just enhance your site.