Example, if you had a job writing J2EE apps then it's quite likely all these tags will apply:

• java
• j2ee
• spring
• hibernate, eclipselink, openjpa, etc
• jpa
• ejb
• spring-mvc, seam, struts or something similar
• servlets
• jsp
• html
• css
• javascript
• jquery
• ant or maven
• oracle, mysql, etc

And that's before you even use anything nonstandard and noteworthy.