Avoiding spam from your web page - disguising your email address
If you have a web site, then a 'mailto' link is a very convenient for anybody browsing to click on, and then use their usual e-mail software to compose and send you a message. However, it is also convenient for spammers. Therefore, to prevent it attracting spam, people often do one of
- set up a mail form, (although that solution may still attract form spam)
- remove the mailto link and show their email address as an image (most likely to fool spammers)
One very simple form of 'obfuscating' an address is to just show it with the '@' sign replaced with the word 'at', as in "example_name at gn dot apc dot org".
Also remember that having reports available for download, whether in PDF, MS Word, or other format will expose any e-mail addresses they contain - even if the spambot can't read PDF files itself, a search engine is likely to make available an HTML version. You might want to consider uploading a different version of the document from the print version, with e-mail addresses obscured or altered.
Disguising an address as an image
You can use any graphics program like Windows Paint or Mac Paint or GIMP to add text to a blank background which that you can save as a .PNG or .GIF image to be embedded on your contact page. (You can even put it on a pictorial background and save as a .JPG like this, but there this probably isn't significant additional help against spam.) Bear in mind that people with a visual impairment will not be able to use this.
Add this to the source of the page you want