Stopping Spam, which one maybe safer?

[Lunatic3]

I dont know if this is a right forum to ask the question or not, but hope someone help me.
Am desiging a web site that holds the information for many ppl. In fact their email address should be present at the page so people can mail them. I have three choices
1- Put a link for their email address :mailto:....
2- Explicity write the email address without any link.
3- Explicity write the email address, providing the link mailto:...

If the viewer of the site wants to email the person and does not wish to use his mail client like outlook express, then:
In case 1: he has to read the link property or click on it to open its mail client and then copy paste the address in his own mail box.
In case 2: He simply copy pastes the address.
In case 3: He may copy paste the address or choose to send mail using default mail clinet.

Considering ease of use to me it seems case 3 is the best choice.
But here comes the problem of spammers. I dont know how deep they dig into the web pages to find email addresses. Do they just read the text, or go deep into the html code and extract emails?
So which one of the above can better avoid spams?

Thanks