Can I make a Google +1 button +1 a specific URL - e.g. my front page, <http://www.givingwhatwecan.org/> - rather than the URL the button's on? I've [read](http://www.nicheprofitclassroom.com/blog/google-1/) that you can do this by putting that URL between the g:plusone tags like so:

```
<g:plusone>http://www.givingwhatwecan.org/</g:plusone>

```

However I've done this on both <http://gwwc2.centreforeffectivealtruism.org/> & <http://gwwc2.centreforeffectivealtruism.org/resources/index.php> and it only seems to work on [the former](http://gwwc2.centreforeffectivealtruism.org/) - if you click the +1 button on [the latter](http://gwwc2.centreforeffectivealtruism.org/resources/index.php), you'll be +1ing <http://gwwc2.centreforeffectivealtruism.org/resources/index.php> rather than <http://www.givingwhatwecan.org/>